that's what the law requires. and we will do it because we're the commonwealth of massachusetts, and we try to do the right thing. >> reporter: grossberg says what happened in massachusetts should prompt other states to examine their own labs. >> i think in our system, our criminal justice system, there is nothing worse than an unfair, unconstitutional conviction. >> reporter: in dookhan is convicted, she could face more than 20 years in prison. elaine quijano, cbs news, boston. >> reid: a new report says drug ask alcohol abuse is on the rise among amtrak employees. among other findings the report says mechanics and signal operators tested positive at four time the rate of employees at other railroads last year. amtrak management said it will step up random drug testing. a washed out in drought-ridden west texas. rain continued to fall today over part of the lone star state. up to five inche inches have fan the last 24 hours, swamping street, strandingars and drivers. water was four feet deep in this swrairses. it